From 01199361c665245d557b8eefef56d648ddb3867a Mon Sep 17 00:00:00 2001 From: Archit Taneja Date: Thu, 25 Jun 2015 11:29:24 +0530 Subject: [PATCH] drm/msm/dsi: Report PHY errors only when they really occur DSI PHY errors are falsely reported whenever a dsi error occurs. This is because DSI_DLN0_PHY_ERR isn't only used as a status register, but also used to mask PHY errors. Currently, we end up reading the mask bits too and therefore always report errors. Ignore the register mask bits and check for only the status/clear bits. Signed-off-by: Archit Taneja Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/dsi/dsi_host.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c index 2d8f19450788..c05a55eca16f 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_host.c +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c @@ -1276,7 +1276,11 @@ static void dsi_dln0_phy_err(struct msm_dsi_host *msm_host) status = dsi_read(msm_host, REG_DSI_DLN0_PHY_ERR); - if (status) { + if (status & (DSI_DLN0_PHY_ERR_DLN0_ERR_ESC | + DSI_DLN0_PHY_ERR_DLN0_ERR_SYNC_ESC | + DSI_DLN0_PHY_ERR_DLN0_ERR_CONTROL | + DSI_DLN0_PHY_ERR_DLN0_ERR_CONTENTION_LP0 | + DSI_DLN0_PHY_ERR_DLN0_ERR_CONTENTION_LP1)) { dsi_write(msm_host, REG_DSI_DLN0_PHY_ERR, status); msm_host->err_work_state |= DSI_ERR_STATE_DLN0_PHY; } -- 2.39.2